After a nuclear power plant disaster, a nearby village was contaminated with radiation and left deserted for over ten years. It’s now 1984, and people are allowed to return. A few individuals revisit their ancestral home, only to discover a radioactive monster bat residing in their attic. The family must endure the night to make it out by morning, but the creature has its own agenda. They soon realize they are being infected with a lethal plague that threatens to end their lives, assuming the monster doesn’t get to them first.